Railway-car truck.



PATENTED FEB. 27, 1906.

J. M. HOPKINS. RAILWAY cm TRUCK.

APPLIOATIOR' FILED JUNE 12, 1805.

UNITED STASEEEKTENT orr os.

Specification of Letters Patent.

Patented Feb. 27, 1906.

Application filed June 12, 1905. Serial No. 264,768.

To all whom it may concern.-

Be it known that 1, JAMES M. HoPKnvs, a citizen of the United States, residing in Chicage, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Railway-Car Trucks, of which do declare the followin to be a full, clear, and exact description, rel erence being had to the accoin anying drawings, forming part of this speci ication.

The present invention has for its main object to provide a combined truck-bolster and spring-support. The invention also is designed to provide various other features of improvement, all of which will be hereinafter described, and particularly pointed out in the claims at the end of this specification.

Figure l is a view in vertical longitudinal section through half of a car-truck embodying my invention. Fig. 2 is an end view of the combined truck-bolster and spi'in -support, the end of the body-bolster an por tions of the side frame being also shown, certain parts being broken away for better illustration. Fig. 3 is a pore ective view of the end portion of my coin ined truck-bolster and spring-support. Fig. 4 is a detail perspective view of one of the spring-caps or side bearin s.

Theiouy bolster A of the truck may be of any suitable construction. As shown, this body-bolster is provided centrally with a depending center bearing-post a, adapted to enter a corresponding centrall -disposed socket b of the combined truck-b0 ster and springsupport B. 'lhiseoinbined truck-bolster and spriiigsupport B is formed of metal, and iiiasmuch as each of its end portions will be of the same construction I have not deemed it necessary to illustrate both ends of the combined truckbolstcr and spring-support in the drawings. Preferably the combined bolster and spring-support B is of channeled or trou h-like shape, the bottom bars I) of each end cing sidlicientlydepressed to form a support for the coil-springs U. Upon the group of springs C at each end of the truck-bolster rests a side bearing ors ring-cap D, the ends d of whichproject latera ly into seats orguideways [1 that are formed in the side walls 5' of the combined truck-bolster and spring-so port. 'lhccndsol' the body-holsterAmay e su iported in any convenient manner upon the sir c hearin s or spri rig-caps vD; but as shown the upper [ace of each side hearing or springcup l) is formed with a groove d to receive the bearing-balls E, that enter a correspond ing groove (1, formed adjacent the end of the body-bolster A and upon its under side. The groove d in the side bearing of sprin cap I) and preferably also the groove (1 W1 l he formed deeper about the center than adjacent the ends; thus having atendency to restore the body-bolster A to a normal central osition.

A ove and below the ends of the combined truck-bolster and spring-support Bextend, respectively, the trussed bars F and G of the side frame, and these bars sit Within seats or depressions b and 5 that are formed at the top and bottom, respectively, of the coinbiiied truck bolster and spring-support. Through the bars F and G and also through the laterally-extending nuts I) and b of the seats 6- and I) pass thet rough-bolts II, that pass also through the side frame-bars F and G and securely hold the parts in position.

From the foregoing description it will be seen that by the employment of my improved truck-bolster and spring-support the necessity of )roviding a separate springplank is avoided. It will also be seen -that the side hearings or spring-caps D, resting u on the springs C, serve to carry practically al the weight of the car on the s rings and the central portion of the truck-b0 ster while serving as a guide for the center pin that depends from the body-bolster receives coniparatively little strain incident to the weight of the car. The advantage in thus transmitting the weight of the car directly upon the side 7 bearings and through them to the springs and side frames will be readily ap preciated by those familiar with this class of inventions.

It is manifest that the precise details of construction above set out may be varied within Wide limits without departure from the spirit of the invention and features of the invention may be employed without its adoption as an entirety.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A oar-truck comprising a combined truck-bolster and spring-support formed integrally and of metal, springs mounted upon said spring-support, and a side bearing mounted noon said springs and provided in its top surhu'c with a ln'aring-suriacc to reccive the weight of the body-bolster.

3.- A can-truck comprising a combined IIO truck-bolster and spring-support formed integrally and of metal, sprin s mounted upon sand spring-support, a side iieering mounted upon said springs and provided in its top with a grooved lieerin surfaee to receive the weight of the body-be ster.

3. A oer-truck comprising a combined truck-bolster and spring support, springs mounted upon said spring-su ppert, side beerings mounted upon said springs and provided iniheir tops wlth beeringsurfaecs, a body- UUiStLI' having integral bearing-surfaces extending over the bearing-surfaces of the side beerings, and bearing-bells loosely disposed between said bearing-surfer: is.

4. .A ear-truck comprising a combined truck-bolster and spring-supprn't, springs mounted upon said spring'snpport, side bearings mounted upo said springs and provided in their to s with grooved beering-surfaees, a bodybo ster having integral grooved beering-surfeees extending over the bearing-surfaces of the side bearings, and boerin -bells loosely disposed in the grooves in sni heming-surfalees.

5. A ear-truck comprising a combined truck-bolster and spring support, springs mounted upon said spring-support side liearings mounted upon said springs and provided in their tops with grooved bearingsurfeoes,

a bodydioister having integral grooved beefbig-surfaces extending over the bearing sdi faces of the side bearings, the grooves in hum said surfaces being formed deeper in Him centers than at their ends, and heern gdmlis g loosely disposed in said. grooves.

6. A car-trfiek comprising a enmbim'r truck-bolster snd spring-sup ort formed in Legrally of mete] and rovired at its wish-iwith a socket to revolve the renter of i i r. truck, springs mounted upon said epring support, side bearings mounted up n springs and provided in their to e of rooved beerin -surfeeesm bodydiol ter inn ing integral grooved beoring-surfnees cistern?- ing over the hearingsnifaees or tiw mm: bearin s, the grooves in both said nrFne-ew; being mrmed deeper at their centers :ilmn ei their ends, and hearing-beds looseiy disposui in said rrooves.

7. T 1e combination with n mn' iiii truck-bolster and spring-support iW'lHfii in tegral and of metal and. provided an" iis ends Wihh laterally-extended seats to recoi t5 1' u or and lower irusshers of the side Irene ofiiolts passing thri'iugil said se'ests end in bars to retain said parts in posit-ion.

JAMES 1i JFK NR Witnesses KATHARINE UE'nLAen, LILIAAN Pemwlon 

